Characters
The President must think I'm a third-rate jerk.
— Sydney · The American President

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker worries that the President holds a low opinion of them, ranking them as a contemptible, mediocre fool. The line is self-lacerating and anxious, a blunt self-put-down voicing fear of being judged harshly by someone important.
Context reviewed